No. With the holds at gates and taxi times, even if the scheduled flight time were 10 minutes, my experience is that flights usually have 1 hour of waste: taxii

No. With the holds at gates and taxi times, even if the scheduled flight time were 10 minutes, my experience is that flights usually have 1 hour of waste: taxiing, waiting in line to take off, waiting in a holding pattern to land, waiting for the previous flight at the arrival gate to leave.